Road scraper and grader.



' A.-OARVER. ROAD SGRAPER AND GRADER.

' APPLICATION FILED JAN.29,1913. J 1,084,534. v Patented Jan.13,1914

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' UNITED STATES AMI canvas, or salmon, cancer. 1

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Specification of Letters Patent. I Application filed J'anuary 29, 1813. Serial KOLIIMQQQ,

lf'atented an. 13, 1914.

To all whom it may concern:

Be it known that I, AMI CARVER, a citizen of the United States, residing at Bandon, in the county of Coos and State of Oregon, have invented new and useful Improvements in Road Scrapers and Graders, of which the following is a specification.

The invention provides a machine adapted most especially for leveling and grading roadways, the construction being such as to admit of the interchange of a scoop and blade according to the special use for which the machine is to be adapted, such parts he-v ing adjustable at either end to suit the cams ber of the road or to remain parallel to a givenposition. I

The invention provides novel means for adjusting and dumpin the scoop, the latter operation being e (acted by power derived from the supporting wheels as trac tors.

The invention further contemplates a machine of the character stated mounted upon wheels whose spindles are connected to the axle by metal joints and are adapted to be moved in substantially the same manner as the steering wheels of an automobile. A

shaft is arranged in such relation'as to re: ceive power from the supporting wheels when the-latter occupy a position to direct the machine straight ahead and at other times it being practically impossible to establish connection between said shaft and the supporting wheels, hence the scoop can be dumped only at such times when the machine is moving straight ahead.

The invention consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out'i-n the a pended claims.

- Re erring to the drawings, forming a part of the specification, Figure 1 is a top plan view of a machine embodying the invention,

"showing it adapted for grading. Fig. 2 is a vertical longitudinal section on the line 2-2 of Fig. 1. Fi 3 is a transverse section on the line 33 of ig. 1.

Corresponding and like parts are referred to in the following descrl tion, and indicated in all the views of t e drawings, by the same reference characters.

The main frame of the machine comprises longitudinal bars 1 which have their front portions converged and terminating in a clevis 2 to be coupled to a traction engine WlllCh is specifically designed to be used as the motive power or drawin .the. machine over the road. .The rearaxleisindicatedat 3 and its armsor spindles 4 are connected thereto by knuckle joints in substantially the same manner as is common in the construction of automobiles and mechanically propelled vehicles. The supporting wheels 5 have friction rims 6 upon their inner sides arranged to enga e friction wheels 7 secured to the outer surfs. of a shaft 8, which is mounted in the longitudinal bars 1- of the mam frame parallel with the axle and in a manner to move vertically whereby the friction wheels 7 "may be thrown into or out of shaft 8 is adapted 'to'be moved by means of an operating lever 9, which ismounted upon the main frame and extends within convenient;reach of the operator. A rod 10 conof the spindles 4, said rod being moved by means of a steering post-12 which is connected thereto in any ordinary way. A sprocket wheel 13 is secured-tothe shaft 8 and a sprocket chain 14-conneots it with a sprocket wheel 15 secured to a shaft 16, which is mounted in the longitudinal bars 1 parallel with the shaft 8 and axle 3. The shaft 16 has a crank 17 which is adapted-to be conthe scraper according to which is in position.

Two shafts 19 are mounted upon end portions of a cross bar 18 each having a crank 20 at its'outer end and a worm gear 21 at its inner end, said worm gear belng in mesh with a worm 22 at the lower end of an upright shaft 28, the latter having a hand wheel at its upper end arranged conveniently to the operator. The cranks 20 at the outer nected in any manner with either the scoop or the scraper to admit of the same being adjusted vertically at one or both ends. The rear portion of the scoop or scraper .is adapted to be connected to the crank 17.

The scoop is indicated at 24 and may be of any construction and is provided at its lower forwardj edge with a blade 25 detachably fitted thereto so as to be replaced when required. Links 26 connect the forward corner portions of the scoop 24 with the cranks 20 and a link 27 connects the rear portion of the scoop with the crank 17. When it is required to adjust one end only of the scoop nects arms 11 extending from the inner ends nected with the rear portion of the scoop or engagement with the friction rims 6. The

ends of the shafts 19 are adapted to be conone or the other of the shafts 23 is operated.

When the scoop is to be adjusted so as to remain parallel to a given position both shafts 23 are operated. B adjusting opposite ends of the scoop in ependently it may be adapted to the camber of the road. The scoopis dumped by moving the shaft 8 to bring the friction wheels 7 into engagement with the friction rims 6, thereby causing the shaft 16 to rotate with the result that the rear portion of the scoop is elevated to such connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the device which I now consider to he the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and thatsuch changes may be made when desired as are within the scope of the claims appended hereto.

Having thus described the invention what is claimed as new, is 1. In a machine of the character described the combination of a main frame, a scoop, a shaft having a crank portion connected with the scoop for dumping the latter, a second shaft having connection with the shaft havin the crank and mounted to move Nel'tica y, friction wheels at the outer ends of the last mentioned shaft, supporting wheels mounted upon spindles having knuckle connection with the axle and provided with friction rims to engage-with the said friction wheels, means for moving the said second shaft vertically to carry the friction wheels clear of the supporting wheels, and means for moving the supporting wheels for steer-. ing the machine.

2. In a machine of the character described, the combination of a main frame, a scoop, a shaft having a crank portion connected with the rear part of the scoop for dumping the latter, a second shaft connected with the first mentioned shaft and havin friction wheels at its ends, supporting whee s mounted upon spindles having knuckle connection with the .axle and provided with friction rims to engage with the friction'wheels at such times on y when the supporting wheels occupy a position to cause the machine to travel straight ahead, means for ad usting the supporting wheels to different angles, and means for moving the said second shaft to throw the friction wheels clear of the supporting wheels and into or out of engagementwith the friction rims.

In testimony whereof I affix my, signature in presence of two witnesses.

AMI CARVER.

Witnesses:

F. J. Framer, ALFRED Moms. 

